Abstract
The aim of this study was to develop and apply an advanced, measurement
based method for the estimation of annual CH4 and N2O emissions and thus gain
improved understanding on the actual greenhouse gas (GHG) balances of
combustion of fossil fuels, peat, biofuels and REF. CH4 and N2O emissions
depend strongly on combustion conditions, and therefore the emission factors
used in the calculation of annual emissions contain significant uncertainties.
Fluidised bed combustion (FBC) has many good properties for combustion of
different types of fuels and fuels of varying quality, e.g., biofuels and
wastes. Therefore, it is currently increasing its market share. In this study,
long term measurements (up to 50 days) were carried out at seven FBC boilers
representing different size classes, loadings and fuel mixes. Both decreasing
load and increasing share of coal in fuel mix increased N2O emissions.
Measurement results from different loading levels were combined with the
common loading curves of similar plants in Finland to estimate annual
emissions. Based on the results, recommendations for emission factors for the
Finnish GHG emission inventory are given. The role of FBC as a potential
technology for the utilisation of biofuels and wastes with future GHG
reduction requirements is discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 289-297 |
| Journal | International Journal of Greenhouse Gas Control |
| Volume | 1 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2007 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- Methane
- Nitrous oxide
- Emission factor
- Partial load
- Fluidised bed combustion